How to fix these Avisynth script errors ?

[VideoFanatic]

I have 64-bit Windows 7 with Avisynth 2.5.8 installed. I'm trying to use McTemporalDenoise but I get a script error saying "Script error: there is no function named "removegrain".

(MCTemporalDenoise.v1.4.20.avsi, line 1051)
(MCTemporalDenoise.v1.4.20.avsi, line 1090)
(New File, line 2)

This is my script:

Mpeg2Source("J:\2 = New\Raw August 06 2001.d2v", CPU=6)
MCTemporalDenoise(settings="medium")

The strange thing is that I have the exact same plugins installed as in my old Vista 32-bit PC and it worked fine on that without errors. I have RemoveGrainSSE2.dll in my plugins folder by the way (RemoveGrain 1.0b Beta) and I have fftw3.dll in the System32 folder just like I had with my old PC.

[jagabo]

I have 64-bit Windows 7... and I have fftw3.dll in the System32 folder

That's the wrong place if you're using 32 bit AviSynth. Put it in SysWOW64.

If you're using 64 bit AviSynth -- good luck finding 64 bit filters.

[VideoFanatic]

Thanks, its working now.

[VideoFanatic]

I have Windows 7 64-bit. I've installed Avisynth 32-bit 2.5.8. I want to use multiple cores to speed up the encoding of the video so I got the Avisynth 2.6 MT Avisynth.dll and put it in the SysWOW64 folder (replacing the 32-bit Avisynth.dll file). The MT page said to do that. http://forum.doom9.org/showthread.php?t=148782

However when I try to encode a video I get an error message saying 64-bit Avisynth is not installed! I can preview the video in AvsPmod yet when I try to encode the video it says I don't have Avisynth 64-bit installed. I don't understand this at all.

[jagabo]

Everything in the chain must be 32 bit. Or everything must be 64 bit. AviSynth, filters, codecs, editor, etc.

[VideoFanatic]

So should I just put the original or MT modified Avisynth.dll file in system32 and not SysWOW64? All my filters are 32-bit.

[jagabo]

All 32 bit dlls go in SysWOW64.